2.5 Health Issues

What is ‘health’?

The state of physical and mental well-being

What are the major causes of ill health?

Diseases- both communicable and non-communicable are major causes. Other factors like diet, stress, and life situations also have a profound effect on both physical and mental health

How can defects in the immune system affect health?

Defects make an individual more likely to suffer from infectious diseases.

How can viruses trigger cancer?

Some viruses living in cells can act as a trigger for cancers.

How can immune reactions to pathogens cause other problems?

Immune reactions can trigger allergies, such as skin rashes and asthma.

How can severe physical ill health affect mental health?

It can lead to depression and other mental illnesses.